Method of making artificial-cork articles.



articles and to the methodiof manufacturing 'nnniinnr Baseline, or ends STRONG CORK LEENNSYFfil-J GGMPANY, or

aver: nsrerrrs, PENNSYLVANIA, ASSIGNOR To ARM- EENNSYLVANIA, a CORPORATIONfiF ARTIFICIAL-CORK ARTICLES.

lilo-Drawing.- 7

To all oliom a: tote Belt known that-I, HERBERT PASCHKE,:E1

I citizen =1ofthe United .States, residing at Ben fivon Heightss-in the county 0t Alleghenylandi State 0 Pennsylvania, have invented anew andu'seful Improvement in Methods of Making Artificial-Cork Articles,

of which the following is" afull, clear, and

exact description. T'

My invention has relation to artificial cork the same,*and isdesigned to provide an article of this character which shall be touglnelastic, and water-repellent, and in which the binder is of'such character that the article will 'notdry 'outrorsbecome brittle, and l which" is insoluble in ordinary solvents, the varti'cles produced being adapted to a wide] variety'pf uses.

My mvention also provides a novel-1* ',-method offmanufacturing such articles, which is-capable, of being carried out in :a-

COIIImQIQlQLWaY at a relatively low cost.

- In accordance with my inventiomlfi'mix the oil, in molds of closed molds, to the action'of heat for a prolonged period of time. The effect of this 1 heating operation is to solidify the'tung oil 1 which acts as a binder for the cork particles,- and thereby produce a shaped body or' article of artificial cork which degree of temperature employe'd,'as well-as the extent of the heating period, will de pend largely upon the mass of the molded body, the particular purpose for which the article is to be used, and the nature and sults by the use of a temperature. of from 212 to 220 F., the treatment extending;

' over a period of from two to three days.

By the above described method, I am able Specification of letters Patent.

part, to oxidation,

possesses a-high degree of elasticity and toughness, together with the other qualities above named. TM

,or otherfibrous orcellularorganic and treat the mixture I in themanner above Patented Mar. is, raw,

1 a ntauoaniea mil-1 25, 9 's ria io.'i44,1sa.

to produce -.a highly 'desirable 'article in V which the tungjoil mayi'bethe-onlyybinder employed. The "eific'iency-ofthis material as a binder is due largely" to the solidifica- I tionof thevoil,- :'and. -vwhich I --'attribute, in

v and in-part, to polymerization of the oil; but in View of the high degree of toughnesswhich I obtain, I am, inclined i to believe that mixes or fuses with some'of the natural glycerids or fatty acids of the cork. I am strengthened in this belief by the fact that someof these'glycerids or' fatty acids,-which the tung oil I have beeniableto 'isolate,-wi ll mix orrfuse I ,with the ytun'gffoili under the, conditions of "treatmentyabove.described;

Other essentialor' aromatic 'oils s'1 ich as pine oil orturpentine, may be mixed with thfeZ-tu'ng ;oi l;-in.ivaryingproportions, if de-V sired. TheQelasticity maybe "further in:

creased by'jthe addition of rubber dissolved in turpentinefiI may also "-add relatively Y'smallquantities' gramm r fattyoil oroils,

suchiascornoihpoppy seed oil, etc; I may granulated or pulverized cork particles vwith tung oil "(otherwise known as China. or" Chinese wood oil, Japanese wood oil, etc.,) with orwitho'ut otheringredients, as-here' inafter described. I then compress the cork mass, which has been thoroughly mixed with the desired shape and 7 subject the molded mass,- while in these also add jdifi'erent solvents; such 'as turpengtin'e, bfen'zin, car'bon-bisulfid, carbon-tetrabalsams, resins or other (suitableagents. 1 Various coloring fmatt'ers" may' also be added to 1 give the formedartic'les'any desired tint or color.

uponthe exactfcharacter' of the article to: be produced, vhave had excellent results ,by'using twenty per cent; by weight creased ordiminished every considerably.

' While}? have I hereinparticularly described the mahutacture of artificial cork,

this novel process mavf also be used to ad vantage in the-manufacture of other artificial compositions-g; That ,isto say, instead of mixing the tung, oil withlcork particles, I may use tung oil with wood-flour, cellulose, material,

described :for the treatment of the mixed. tung oil'and cork.

a, I am, of course, familiar with the fact that tung. oil has been {usedin the linoleum industry in. the manufacture of linoleum.

.uralodorfof the tung oil may be overcome or changedg-by' thef'addition or j.: "TVVl'1l l6 tliQifamOllllt of tung oil employed "may ---be A widely varied,- Ydepe'nding, 'for inestance, 9o

tung-oil, but-this percentage may be in In that -industry, however, the oil is first solidified and is then ground and mixed with the cork and other fillers. This is radically different from my present invention, in the practice of which it is necessary that the solidification of the oil shall take place in contact with the particles.

While, as above stated, the exact tempera- -'ture employed may vary, it should in all twenty-four hours.

.1 claim:

:1. The herein described method of manuiaoturingartificial cork articles, which consists in mixing pulverized or granulated cork'with liquldfunoxidized tung oil, and

subj-ectingthe'material tothe action of heat 4 to solidify the oil while in contact with the cork particles; substantially as described. ;,2. The herein described method of manufacturing artificial cork articles, which consists mixing pulverized or granulated cork with liquid unoxidized tung oil, then shaping the mixture, and then subjecting the shaped masses to the action of heat to solidify the oil while in contact with the cork particles; substantially as described.

The herein described method of manufaetur-ing artificial cork articles, which conasists in mixing granulated or pulverized cork with liquid ,u-noxidi-zed tung oil, and then subjecting the mixture to the action of heat at a 'temperature below that at which the cork will be injured and for a relatively prolonged period to thereby solidify theoil; substantially as described. a

, :4. The herein described method 'bf manudact-uring artificial cork articleawhioh consists in mixing granulated or pulverized nor}; with liquid unoxidized tung oil, com-v pressing the mixture into molds, and subjecting the material while in the molds to the action of heat of such temperature and for such period as to eflect the solidification of the tung oil without injuring the cork; substantially as described.

5. The herein described method of manufacturingartificial cork, which consists in mixing granulated or pulverized cork with liquid unoxidized tung oil and a. suitable solvent, and subjectin the mixture to the action of heat of a re atively'low temperature and during a relatively prolonged period to solidify the-tung oil without injuring the cork; substantially as described.

6. The herein described method of manufacturing compositions ofmatter which con-' sists in mixing fibrous or cellular organic material with liquid unoxidized tung oil, and subjecting the mixture to the action of .heat at a relatively low temperature and during a relatively prolonged period of-time to thereby solidify the oil without injury to the cork; substantially as'describe'd,

7. The herein describedmethod of manufacturing artificial cork, which consists in .mixing granulated or pulverized cork with not more than forty per cent. of liquid unoxidized'tung oil, and subjecting the mixture to the action of heat at a relatively lowv temperature and during a relatively long period to solidify the tung oil without injuring the cork, substantially as described.

8. The herein described method of manufacturing artificial cork, which consists in mixing granulated or pulverized cork with not more than twenty-five percent. of liquid unoxidized tung oil, and. subjecting the mixture to theaction of heat at a relatively low temperature and during a relatively long period to solidify the tun-g oil without injuring the cork, substantially as described. In testimony whereof, I have hereunto set my hand.

HERBERT PA'SCHKE.

' Witnesses:

Gno. B BL'EMING, Geo. iPARMnmm. 

